One way truss head serrated mating screw

Mating screws, One way serrated truss head, Stainless steel 18-8, Coarse (standard) thread

Mating screw shoulder diameter is measured on the outside of the smooth shoulder. The thread diameter is measured on the outside of the threads.

One way serrated truss head mating screw diameter

Mating screws, One way serrated truss head, Stainless steel 18-8, Coarse (standard) thread

Mating screw diameter